%0 Journal Article
%A Grove, Karsten
%A Wilking, Burkhard
%T A knot characterization and 1–connected nonnegatively curved 4–manifolds with circle symmetry
%J Geometry & topology
%D 2014
%P 3091-3110
%V 18
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.2140/gt.2014.18.3091/
%R 10.2140/gt.2014.18.3091
%F GT_2014_18_5_a9